Filechecker in html via applet

Hi all,

nobody out there with an idea on this?
I'm trying to implement a very little tool into my html code: a filechecker!
It's not possible to use javascript for this, if you want to support other browsers than IE (ActiveX!).
The html file I provide is a list of documents with an href set to the doc.
The html file should be accessed via web but locally (e.g. CD or USB stick) as well (thus should work without XMLHttprequest).
That's the intention!
Now my code, how I tried to solve the problem:HTML code goes here >>>
<html>
<script type="text/javascript">
function fileChecker (fileName) {
var Test = document.applets["fileExist"].fileChecker(fileName);
if (Test == "true") {
document.write("exists");
}
else {
document.write("does not exists");
}
}
</script>
<applet code="FileChecker.class" name="fileExist"></applet>
<body>
.some.other.useless.things.
<p>Document titled 'Something' <a href="javascript:fileChecker("./directory/filename.zip")"</a>
...
</body>
</html><<< HTML code ends here >>>

Sorry for the late reply, I was a little busy in the last time.
Thanks for your response. I know of the behaviour and the security restrictions, but I just want to find out, if it is possible to find a way to get around this.
Meanwhile several colleagues told me the same. If I find a way (which I think will not happen), I'll update this thread.

Thanks, merry christmas and a happy new year to all, who are reading this :-)